CMMG 55CA9B7 A1 RECEIVER EXTENSION

CMMG 55CA9B7 - A1 RECEIVER EXTENSION - RIFLE LENGTH BUFFER TUBE AR-15/M4/ M16/LR-308 PATTERN. MADE FROM BLACK HARD COAT ANODIZED ALUMINUM, THE CMMG A1 RECEIVER EXTENSION (BUFFER TUBE) IS DESIGNED TO ACCEPT FIXED RIFLE LENGTH STOCKS AND IS COMPATIBLE WITH MK4 (AR-15) AND MK3 (LR-308) LOWER RECEIVERS. - EQUAL TO CMMG-55CA9B7